The pierce swords are bugged. They inflict their damage prior to their attack, interrupting all attacks in their path. It is a bug that effects every single game of Lockdown. The damage leaders are always pierce sworders, who (defeat) all of LD with the bug.
HOT FIX THE BUG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! patch needed asap
this is every bit as exploitable as looping arenas/floors which you have weighed in on as a bannable offense.
(Note: i don't think this should be bannable, it should be fixed)
EDIT: Please remember that if it is filtered in the game, it should not be used in the forums.
this topic is also been made in bug report. if you are tired of the bug please go cosign. As well as submit in-game bug reports. Let's get this bug fixed.